I believe that the answer is 12 because there is already 3 O molecules and since its in parentheses with 3 outside it that means that there are 3 of those CO molecules meaning that for every 1 CO there will be 3 O’s so 3, four times Is 12
Answer:
the answer is v and z. you can see the pic
precipitation, it is called precipitation
I think that the answer could be A. X and Y